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| author | Remko Tronçon <git@el-tramo.be> | 2009-06-01 08:48:42 (GMT) |
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| committer | Remko Tronçon <git@el-tramo.be> | 2009-06-01 09:24:28 (GMT) |
| commit | 2812bddd81f8a1b804c7460f4e14cd0aa393d129 (patch) | |
| tree | d46294f35150c4f0f43deaf2d31fceaf945ae715 /3rdParty/Boost/boost/utility/compare_pointees.hpp | |
| download | swift-contrib-2812bddd81f8a1b804c7460f4e14cd0aa393d129.zip swift-contrib-2812bddd81f8a1b804c7460f4e14cd0aa393d129.tar.bz2 | |
Import.
Diffstat (limited to '3rdParty/Boost/boost/utility/compare_pointees.hpp')
| -rw-r--r-- | 3rdParty/Boost/boost/utility/compare_pointees.hpp | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/3rdParty/Boost/boost/utility/compare_pointees.hpp b/3rdParty/Boost/boost/utility/compare_pointees.hpp new file mode 100644 index 0000000..e6888a6 --- /dev/null +++ b/3rdParty/Boost/boost/utility/compare_pointees.hpp @@ -0,0 +1,68 @@ +// Copyright (C) 2003, Fernando Luis Cacciola Carballal. +// +// Use, modification, and distribution is subject to the Boost Software +// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at +// http://www.boost.org/LICENSE_1_0.txt) +// +// See http://www.boost.org/lib/optional for documentation. +// +// You are welcome to contact the author at: +// fernando_cacciola@hotmail.com +// +#ifndef BOOST_UTILITY_COMPARE_POINTEES_25AGO2003_HPP +#define BOOST_UTILITY_COMPARE_POINTEES_25AGO2003_HPP + +#include<functional> + +namespace boost { + +// template<class OP> bool equal_pointees(OP const& x, OP const& y); +// template<class OP> struct equal_pointees_t; +// +// Being OP a model of OptionalPointee (either a pointer or an optional): +// +// If both x and y have valid pointees, returns the result of (*x == *y) +// If only one has a valid pointee, returns false. +// If none have valid pointees, returns true. +// No-throw +template<class OptionalPointee> +inline +bool equal_pointees ( OptionalPointee const& x, OptionalPointee const& y ) +{ + return (!x) != (!y) ? false : ( !x ? true : (*x) == (*y) ) ; +} + +template<class OptionalPointee> +struct equal_pointees_t : std::binary_function<OptionalPointee,OptionalPointee,bool> +{ + bool operator() ( OptionalPointee const& x, OptionalPointee const& y ) const + { return equal_pointees(x,y) ; } +} ; + +// template<class OP> bool less_pointees(OP const& x, OP const& y); +// template<class OP> struct less_pointees_t; +// +// Being OP a model of OptionalPointee (either a pointer or an optional): +// +// If y has not a valid pointee, returns false. +// ElseIf x has not a valid pointee, returns true. +// ElseIf both x and y have valid pointees, returns the result of (*x < *y) +// No-throw +template<class OptionalPointee> +inline +bool less_pointees ( OptionalPointee const& x, OptionalPointee const& y ) +{ + return !y ? false : ( !x ? true : (*x) < (*y) ) ; +} + +template<class OptionalPointee> +struct less_pointees_t : std::binary_function<OptionalPointee,OptionalPointee,bool> +{ + bool operator() ( OptionalPointee const& x, OptionalPointee const& y ) const + { return less_pointees(x,y) ; } +} ; + +} // namespace boost + +#endif + |